mrister

#!/usr/bin/env bash

# first, install nodemon from npm
npm install -g nodemon
# use nodemon to monitor your app.js by running the following command from your project directory.
nodemon app.js

# Or use nodemon in verbose mode and start the server.
# Watch app and lib directories and ignore tests and .spec.js named files in lib directory.
# Only detect changes on files with js extensions (-e).

mrister

{
    // Sample configuration for app in /home/myuser/app dir
    "uid": "app",
    "max": 5,  // restart the app successively maximum of 5 times
    "spinSleepTime": 1000, // time to wait until a next restart is attempted (in ms)
    "append": true, // append the logs, do not overwrite
    "watch": true, // watch for changes and restart if they occur
    "script": "server.js",  // main startup script (almost like issuing node server.js)
    "sourceDir": "/home/myuser/app", // the dir where your entire app code resides (dir structure is recursively traversed)
    "args": ["--myAPIKey", "xBlzdn84fa"] // pass any arguments to your app

mrister

#!/usr/bin/env bash

#install pm2
npm i pm2

#run with process.json configuration file for development environment 
pm2 start process.json --env development

# delete it all
# pm2 delete process.json

mrister

/**
 * New Relic agent configuration.
 *
 * See lib/config.defaults.js in the agent distribution for a more complete
 * description of configuration variables and their potential values.
 */
exports.config = {
  app_name: ['my application'],
  license_key: '<licenese key>', // only thing required (or set NEW_RELIC_LICENSE_KEY env variable)
  logging: {

mrister

#!/usr/bin/env bash
# make soure you have mocha installed
npm i mocha -g

# run tests with mocha

mocha --reporter=spec test.spec.js

mrister

#!/usr/bin/env bash
# install babel cli and preset
npm install --save-dev babel-cli babel-preset-es2015

# do the transpiling of original.js file to transpiled.js
babel original.js --out-file=transpiled.js

mrister

/**
 *
 * @param {String } name is the name of the newly created error
 * @param {Function} [init] optional initialization function
 * @returns {Err} The new Error
 */
function createError(name, init) {
    function Err(message) {
        Error.captureStackTrace(this, this.constructor);
        this.message = message;

mrister

/**
 * A custom MyError
 * @param {String} message a message to store in error
 * @constructor
 */
function MyError(message) {
    this.constructor.prototype.__proto__ = Error.prototype;
    // properly capture stack trace in Node.js
    Error.captureStackTrace(this, this.constructor);
    this.name = this.constructor.name;

mrister

/**
 * A custom MyError class
 * @class
 */
class MyError extends Error {
    /**
     * Constructs the MyError class
     * @param {String} message an error message
     * @constructor
     */

mrister

/**
 * A custom MyError class
 * @class
 */
class MyError extends Error {
    /**
     * Constructs the MyError class
     * @param {String} message an error message
     * @constructor
     */